Ballpoint pen



FIG. 1 is a front elevational view of a ballpoint pen showing my newdesign, with the writing tip in the retracted position;

FIG. 2 is a rear view thereof;

FIG. 3 is a right side view thereof, the left side view beingsymmetrical to the right side view;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a right side view thereof with the writing tip in the extendedposition;

FIG. 7 is a magnified cross sectional view taken along line 7--7 in FIG.1; and,

FIG. 8 is a magnified cross sectional view taken along line 8--8 in FIG.1.

The ornamental design for a ballpoint pen, as shown and described.